/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package cn.xclink.kernel.shiro.freemarker;

import org.apache.shiro.subject.Subject;

/**
 * Displays body content if the current user has any of the roles specified.
 *
 * <p>
 * Equivalent to {@link org.apache.shiro.web.tags.HasAnyRolesTag}
 * </p>
 *
 * @since 0.2
 */
public class HasAnyRolesTag extends RoleTag {
	// Delimeter that separates role names in tag attribute
	private static final String ROLE_NAMES_DELIMETER = ",";

	protected boolean showTagBody(String roleNames) {
		boolean hasAnyRole = false;
		Subject subject = getSubject();

		if (subject != null) {
			// Iterate through roles and check to see if the user has one of the
			// roles
			for (String role : roleNames.split(ROLE_NAMES_DELIMETER)) {
				if (subject.hasRole(role.trim())) {
					hasAnyRole = true;
					break;
				}
			}
		}

		return hasAnyRole;
	}
}